CN101667954B - Network of multilayer virtual private LAN (local area network) service and data processing method thereof - Google Patents
Network of multilayer virtual private LAN (local area network) service and data processing method thereof Download PDFInfo
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- CN101667954B CN101667954B CN200910235463.5A CN200910235463A CN101667954B CN 101667954 B CN101667954 B CN 101667954B CN 200910235463 A CN200910235463 A CN 200910235463A CN 101667954 B CN101667954 B CN 101667954B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
Abstract
The invention discloses a network of a multilayer virtual private LAN service. A user side network comprises a UPE and a CE; the UPE and the CE in the user side network adopt a tree structure for connection; nodes of the same level in the tree structure are not communicated with one another; and after receiving node data of the lower level, a node only can transfer the received node data to the node of the upper level. The invention simultaneously discloses a data processing method based on the network of the multilayer virtual private LAN service, comprising the following steps of determining whether the data comes from the node of the upper level or the node of the lower level according to the identification information of the received data port after the node in the tree structure receives the data, transferring the data to the node of the upper level if determining the data comes from the node of the lower level, and broadcasting the data to the nodes of the lower level if not determining the destination address of the data. In the invention, the accessing of a plurality of UPE in the user side network can be supported, and the network storm formed in the user side network can be also avoided.
Description
Technical field
The present invention relates to multilayer virtual private LAN service (VPLS, Virtual Private LAN Service) network and data processing technique, particularly relate to a kind of network of multilayer virtual private LAN service, and the data processing method of network based on VPLS.
Background technology
For tag distribution protocol (LDP, Label Distribution Protocol) the stratification VPLS (H-VPLS of mode, Hierarchal-Virtual Private LAN Service) there are two kinds according to access way at present, the H-VPLS of first QinQ (dot1Q in dot1Q) access way, Fig. 1 is the composition structural representation of the H-VPLS of QinQ access way, as shown in Figure 1, the message that subscriber equipment UPE1 is responsible for customer edge CE1 sends issues nucleus equipment NPE1, UPE1 stamps outer layer label TAG for this message, this outer TAG is for identifying the QinQ tunnel between UPE1 and NPE1, internal layer TAG is for identifying the Virtual Private Network (VPN belonging to this message, Virtual Private Network).NPE1 judges the virtual switch instance (VSI, Virtual SwitchInstance) belonging to message according to outer TAG, and at VSI repeating.
Fig. 2 is label switched path (LSP, Label Switching Path) the composition structural representation of H-VPLS of access way, as shown in Figure 2, the message that UPE1 is responsible for CE1 sends issues NPE1, UPE1 stamps two-layer negotiate marking commutation (MPLS for this message, Multi-Protocol Label Switching) label, this outer layer label is for identifying the LSP Tunnel ID between UPE1 and NPE1, virtual circuit ID (VC ID, Virtual Circuit Identifier) between vpn label mark UPE1 and NPE1.LSR (LSR, Label Switching Router) between UPE1 and NPE1 transmits and Tag switching user's message, is finally peeled off by the outer layer label of message in the last two jump.After NPE1 receives message, judge the VSI belonging to message according to MPLS vpn label, and at VSI repeating.
The H-VPLS of QinQ access way only relates to two-layer H-VPLS, and the H-VPLS of LSP access way, owing between UPE and NPE being the pseudo-line (pw of Spoke type, Pseudo wire) connect, do not observe the restriction of horizontal segmentation, if there is multiple UPE, still there is the hidden danger of loop, limit the flexibility of its networking, large-scale network design can not be carried out to the equipment of UPE.In practical application, these schemes can not meet the demand of provider customer to the H-VPLS of multilayer.
Summary of the invention
In view of this, main purpose of the present invention is the network providing a kind of multilayer virtual private LAN service, and the data processing method of network based on VPLS, multiple UPE can be made to be linked in VPLS network, the generation of Data Storm can not be caused, and data retransmission can be realized smoothly.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of network of multilayer virtual private LAN service, comprise the core network of full link model and the network of user side, described Customer Premises Network comprises subscriber equipment UPE and customer edge CE, UPE and CE in described Customer Premises Network adopts tree structure to connect, not connected between same first nodes in described tree structure, the node receiving next stage node data only can forward to the even higher level of node of described node.
Preferably, VPLS VPLS access table and VPLS exit list is provided with in each UPE node of described tree structure, wherein, record in described VPLS access table VPLS mark, VPN (virtual private network) VPN mark, the mark of active UPE and member property thereof, record mark and member property, the routing forwarding entry of all object UPE nodes in described VPLS exit list.
Preferably, after node in described tree structure receives data, according to the VPLS mark of carrying in described data, VPN mark and source node identification find out the member property information of described source node in VPLS access table, determine that described data come from even higher level of node or next stage node, when described data come from next stage node, directly described data retransmission is given the even higher level of node of described node, when described data come from even higher level of node, MAC table is searched according to the destination node MAC carried in described data, if can find the MAC of coupling, the routing forwarding entry corresponding to described destination node carries out data retransmission, if fail to find the MAC of coupling, to described node all next stage node broadcasts described in data.
Preferably, described member property comprises: for the even higher level of node of node, and its member property is root, and for the next stage node of node, its member property is leaf.
A kind of data processing method of the network based on multilayer virtual private LAN service, UPE and CE in Customer Premises Network in multilayer virtual private LAN service VPLS adopts tree structure to connect, not connected between same first nodes in described tree structure, the node receiving next stage node data only can forward to the even higher level of node of described node, VPLS access table and VPLS exit list is provided with in each node in described tree structure, wherein, VPLS mark is recorded in described VPLS access table, VPN (virtual private network) VPN mark and the member property of active UPE, mark and the member property thereof of all object UPE nodes is recorded in described VPLS exit list, routing forwarding entry, described method comprises:
After node in described tree structure receives data, according to the VPLS mark of carrying in described data, VPN mark and source node identification find out the member property information of described source node in VPLS access table, determine that described data come from even higher level of node or next stage node, when described data come from next stage node, directly described data retransmission is given the even higher level of node of described node, when described data come from even higher level of node, MAC table is searched according to the destination node MAC carried in described data, if can find the MAC of coupling, the routing forwarding entry corresponding to described destination node carries out data retransmission, if fail to find the MAC of coupling, to described node all next stage node broadcasts described in data.
Preferably, described member property comprises: for the even higher level of node of node, and its member property is root, and for the next stage node of node, its member property is leaf.
In the present invention, the Customer Premises Network in VPLS network is adopted tree structure, and limit the data retransmission rule between some nodes in this tree structure, make not carry out data retransmission between the brother of node, downstream site only can superior node for data forwarding.Like this, can realize accessing multiple UPE in Customer Premises Network, Customer Premises Network can be avoided again to form network storm, achieve the forwarding of data well.Technical solution of the present invention realization is simple and practical.
Accompanying drawing explanation
Fig. 1 is the composition structural representation of the H-VPLS of QinQ access way;
Fig. 2 is the composition structural representation of the H-VPLS of LSP access way;
Fig. 3 is the composition structural representation of the network of multilayer virtual private LAN service of the present invention.
Embodiment
Basic thought of the present invention is: the Customer Premises Network in VPLS network is adopted tree structure, and the data retransmission rule limited between some nodes in this tree structure, make not carry out data retransmission between the brother of node, downstream site only can superior node for data forwarding.Like this, can realize accessing multiple UPE in Customer Premises Network, Customer Premises Network can be avoided again to form network storm, achieve the forwarding of data well.
For making the object, technical solutions and advantages of the present invention clearly understand, by the following examples also with reference to accompanying drawing, the present invention is described in more detail.
Fig. 3 is the composition structural representation of the network of multilayer virtual private LAN service of the present invention, as shown in Figure 3, the network of multilayer virtual private LAN service of the present invention comprises the core network of full link model and the network of user side, wherein, core network comprises by nucleus equipment NPE1, the network of NPE2 and NPE3 composition, the network of user side comprises the network be made up of UPE and CE, the network configuration be connected with NPE2 as shown in Figure 3, the network of user side of the present invention adopts the tree structure shown in Fig. 3 to carry out networking, in this tree structure, with not connected between first nodes, after certain node in tree structure receives the data of next stage node, only can forward to the even higher level of node of this node.In the present invention, VPLS access table and VPLS exit list is provided with in each UPE node of tree structure, wherein, record in described VPLS access table VPLS mark, VPN (virtual private network) VPN mark, the mark of active UPE and member property thereof, record mark and member property, the routing forwarding entry of all object UPE nodes in described VPLS exit list.Concrete, described VPLS exit list comprises MAC and shows (clean culture is used) and broadcast table (broadcast is used), wherein, the object member outlet information that this MAC of MAC table record is corresponding, member property (root/leaf), many MAC can corresponding same object member export, object member outlet that also can be corresponding different.The outlet information of all members in broadcast table record virtual switch instance VSI, member property (root/leaf).Here, the mark of UPE node comprises the identification informations such as the MAC Address of UPE node.After the node in tree structure receives data, according to the VPLS mark of carrying in described data, VPN mark and source node identification find out the member property information of described source node in VPLS access table, determine that described data come from even higher level of node or next stage node, when described data come from next stage node, directly described data retransmission is given the even higher level of node of described node, when described data come from even higher level of node, MAC table is looked into according to the user MAC carried in described data, if coupling, show to find out outlet information corresponding to destination node, data retransmission is carried out according to the routing forwarding entry that MAC shows corresponding to described destination node, if it fails to match for MAC, show to can not determine out described destination node, according to broadcast table to described node all next stage node broadcasts described in data.The present invention proposes to identify that received data message is from even higher level of node or next stage node by the member root/leaf attribute of mark node.If the access table receiving message coupling is provided with root attribute, illustrate that message is from even higher level of node, if the access table receiving message coupling is provided with leaf attribute, illustrate that message is from next stage node.Concrete, when each middle UPE node in tree structure of the present invention receives the data flow from next stage UPE, do not need other next stage nodes under this node to forward this data flow, can only forward to the even higher level of node of this node.Due to employing is tree structure, receive between the UPE node of data flow and even higher level of node and also can only have a connection outlet (port), therefore, for the data message that the even higher level of node of this node forwards, the MAC Address that need not learn root node can be configured in VFI example.
When each node in tree structure of the present invention receives the data flow from even higher level of node, can forward to multiple nodes of next stage.Concrete, when concrete destination address can be determined according to data flow, directly give the object (UPE or CE) corresponding to determined destination address by data flow, if and when can not determine out the destination address of data retransmission, all next stage nodes to this node are broadcasted.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (6)
1. the network of a multilayer virtual private LAN service, comprise the core network of full link model and the network of user side, described Customer Premises Network comprises subscriber equipment UPE and customer edge CE, it is characterized in that, UPE and CE in described Customer Premises Network adopts tree structure to connect, not connected between same first nodes in described tree structure, the node receiving next stage node data only can forward to the even higher level of node of described node.
2. network according to claim 1, it is characterized in that, VPLS VPLS access table and VPLS exit list is provided with in each UPE node of described tree structure, wherein, record in described VPLS access table VPLS mark, VPN (virtual private network) VPN mark, the mark of active UPE and member property thereof, record mark and member property, the routing forwarding entry of all object UPE nodes in described VPLS exit list.
3. network according to claim 2, it is characterized in that, after node in described tree structure receives data, according to the VPLS mark of carrying in described data, VPN mark and source node identification find out the member property information of described source node in VPLS access table, determine that described data come from even higher level of node or next stage node, when described data come from next stage node, directly described data retransmission is given the even higher level of node of described node, when described data come from even higher level of node, MAC table is searched according to the destination node MAC carried in described data, if can find the MAC of coupling, the routing forwarding entry corresponding to described destination node carries out data retransmission, if fail to find the MAC of coupling, to described node all next stage node broadcasts described in data.
4. the network according to Claims 2 or 3, is characterized in that, described member property comprises: for the even higher level of node of node, and its member property is root, and for the next stage node of node, its member property is leaf.
5. the data processing method based on the network of multilayer virtual private LAN service, it is characterized in that, UPE and CE in Customer Premises Network in multilayer virtual private LAN service VPLS adopts tree structure to connect, not connected between same first nodes in described tree structure, the node receiving next stage node data only can forward to the even higher level of node of described node, VPLS access table and VPLS exit list is provided with in each node in described tree structure, wherein, VPLS mark is recorded in described VPLS access table, VPN (virtual private network) VPN mark and the member property of active UPE, mark and the member property thereof of all object UPE nodes is recorded in described VPLS exit list, routing forwarding entry, described method comprises:
After node in described tree structure receives data, according to the VPLS mark of carrying in described data, VPN mark and source node identification find out the member property information of described source node in VPLS access table, determine that described data come from even higher level of node or next stage node, when described data come from next stage node, directly described data retransmission is given the even higher level of node of described node, when described data come from even higher level of node, MAC table is searched according to the destination node MAC carried in described data, if can find the MAC of coupling, the routing forwarding entry corresponding to described destination node carries out data retransmission, if fail to find the MAC of coupling, to described node all next stage node broadcasts described in data.
6. method according to claim 5, is characterized in that, described member property comprises: for the even higher level of node of node, and its member property is root, and for the next stage node of node, its member property is leaf.
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| CN200910235463.5A CN101667954B (en) | 2009-10-14 | 2009-10-14 | Network of multilayer virtual private LAN (local area network) service and data processing method thereof |
| PCT/CN2010/076917 WO2011044805A1 (en) | 2009-10-14 | 2010-09-14 | Multi-layer virtual private local area network service network and data processing method thereof |
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| CN200910235463.5A CN101667954B (en) | 2009-10-14 | 2009-10-14 | Network of multilayer virtual private LAN (local area network) service and data processing method thereof |
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| CN101667954B (en) * | 2009-10-14 | 2015-01-28 | 中兴通讯股份有限公司 | Network of multilayer virtual private LAN (local area network) service and data processing method thereof |
| CN103312611B (en) * | 2013-06-03 | 2016-12-28 | 华为技术有限公司 | Message processing method, device label processing method and equipment |
| CN104869055B (en) * | 2014-02-20 | 2019-11-05 | 南京中兴软件有限责任公司 | A kind of data forwarding method and device |
| US9819573B2 (en) | 2014-09-11 | 2017-11-14 | Microsoft Technology Licensing, Llc | Method for scalable computer network partitioning |
| US9544225B2 (en) * | 2014-09-16 | 2017-01-10 | Microsoft Technology Licensing, Llc | Method for end point identification in computer networks |
| CN107566264B (en) * | 2017-09-28 | 2019-09-20 | 北京千丁互联科技有限公司 | A kind of means of communication based on tree network, node and communication system |
| CN108600294B (en) * | 2018-02-28 | 2021-11-19 | 国云科技股份有限公司 | Cloud terminal screen sharing system and method |
| CN110113261B (en) * | 2019-05-21 | 2022-04-01 | 广东易臣信息技术有限公司 | Processing method and device for cross-system data exchange hierarchical packet routing |
| CN113067772B (en) * | 2021-06-02 | 2021-07-30 | 支付宝(杭州)信息技术有限公司 | Transaction forwarding method between block chain networks |
| CN115065632B (en) * | 2022-03-31 | 2023-11-17 | 重庆金美通信有限责任公司 | Lightweight tree network data forwarding method |
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| CN101079806A (en) * | 2006-02-07 | 2007-11-28 | 丛林网络公司 | Bi-directional forwarding in Ethernet-based service domains over networks |
| CN101155130A (en) * | 2006-09-30 | 2008-04-02 | 华为技术有限公司 | Method for learning MAC address and system and equipment for conveying VPLS client data |
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| US7719957B2 (en) * | 2005-08-29 | 2010-05-18 | Alcatel Lucent | Resiliency in minimum cost tree-based VPLS architecture |
| CN101667954B (en) * | 2009-10-14 | 2015-01-28 | 中兴通讯股份有限公司 | Network of multilayer virtual private LAN (local area network) service and data processing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101079806A (en) * | 2006-02-07 | 2007-11-28 | 丛林网络公司 | Bi-directional forwarding in Ethernet-based service domains over networks |
| CN101155130A (en) * | 2006-09-30 | 2008-04-02 | 华为技术有限公司 | Method for learning MAC address and system and equipment for conveying VPLS client data |
| CN101521631A (en) * | 2009-04-14 | 2009-09-02 | 华为技术有限公司 | Treatment method, equipment and system for VPLS network messages |
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